body{
    background: url(../images/bg.jpg) no-repeat;
    background-size:100% 100%;
    background-attachment:fixed;
    color: #D9D7D7;
}
.outter{
    width: inherit;
    height: 35.5733rem; 
    margin: 0 auto;
    .logo_pic{
        width: 4.9867rem;
        height: 4.16rem;
        margin: 8.9867rem auto 0;
        background: url(../images/icon0.png) no-repeat center;
        background-size: 4.9867rem  4.16rem;
    }
    .DeciTree{
        margin-top: 2.1867rem;
        margin-bottom: 7.7867rem;
        text-align: center;
        line-height: 1.4133rem;
        font: normal 400 1.3867rem/1.4133rem 'Microsoft Yahei';
    }
    .uName{
        position: relative;
        height: 2.48rem;
        width: 16.8533rem;
        margin: 0 auto;
        text-align: center;
        font:normal 300 .8267rem/2.48rem 'Microsoft Yahei'; 
        border-bottom: .08rem solid #b1b0b0;
       .uName_pic{
            position: absolute;
            left: 5%;
            top: 20%;
            width: 1.3333rem;
            height: 1.3333rem;
            background: url(../images/uName.png) no-repeat center ;
            background-size: .96rem .88rem;
        }
        input{
            text-align: center;
            color: #b1b0b0;
            border: none;
            outline: none;
        }
    } 
    .logBtn{
        width: 16.8533rem;
        height:  2rem;
        border-radius: 1rem;
        margin: 1.5733rem auto;
        background-color: #D01E38;
        text-align: center;
        font: normal 300 .8325rem/2rem 'MicrosoftYahei';
    }
}